UNE-EN 12697-39:2022

This document describes a test method for the determination of the binder content of samples ofbituminous mixtures by ignition. As such, it is an alternative to the more traditional method ofextracting the binder using solvents. The method can be used for evaluation of mixture compositionbecause the remaining aggregate can be used for determining aggregate gradation and density,provided excessive breakdown of the aggregate particles does not occur at the temperature reached.The results can be used for process control or checks on the compliance of mixtures. However, the needfor calibration of a mixture, either on the complete mixture or on each of its component materialsseparately, before an analysis can be carried out makes this method easier to use with regularly usedmixtures rather than with an extensive range of different mixtures from different aggregate sources.The test method is equally suitable for the analysis of mixtures containing unmodified or modifiedbinders because the method has to be calibrated for each mixture being checked when calibration onmixtures is used. In case of doubt/dispute, the determination of the calibration value based onlaboratory-prepared bituminous mixtures (see A.1 and A.2) is the reference method.